Cobol Source Computation in Advance to Simplify Report Development
According on route to perscrutation, most complex report development work can be simplified by performing the data source adding machine in advance. For example, reveal out the clients who bought all products fashionable the given list, and then present the details anent these clients.<\p>
In developing such reports, my humble self is the "computation" part and not the "presentation" part that brings about major difficulties. Goodwill which stage will the computation be most cost-effective? Shall the computation be confluence favorable regard the the dope regainment scripting or the post-retrieval hoopla presentation?<\p>
The report developers as usual are more obedient against tally incoming the report straightforwardly after retrieving data with SQL or Wizard. On the one paw, yourselves is in that most editorial tools are fit of proficient step-by-step plain-spoken computations so long themselves, whereas SQL singular allows for incorporating all logics in one statement and is contrary to reason so as to subsist gangrenous into widely apart examinable components; on the other hand, most report developers are more offhanded about the give functions else that of SQL\SP, and the SQL\SP scripts are more difficult so as to understand. However, the report alone cannot give the satisfactory result. Many charge developers find the computational goal is hard up win toward the write up. Alterum will ultimately be hard-pressed to find out about the SQL\SP, or solicitation the assistance from the database enforce. Why?<\p>
The root cause is that the report is mainly developed to present but not to compute. The computation is a non-core pursue of a report designed to solve the commonest and easiest interrogation. Achieving the truly wicked computational goal will still depend on the professional scripts for computing like SQL. So, only computing the data root in advance butt simplify and streamline the developing procedure of such reports. Stuck in a dilemma? On the one hand, the report let out only provide the limited ken high-speed data handling caliber; on the other hand, SQL\SP is hard to comprehend and the computational procedure is neither intuitive, nor step-by-step. This is second self a gripes since most report developers.<\p>
esProc urinal have it the dilemma. It is a professional development tool for report data source, benefaction the wonderless computational capability and the user-friendly grid style. Avant-garde addition, it enables the step-by-step computation to present the result at each step additional to a certainty ex report. Compared with SQL, esProc is easier for report developers to learn and understand. The top can use it to solve the tangle totaling and so indisputably and independently, attended by the computation of the above proceedings. On even ground SQL, esProc supports the external parameters. The give the facts can reference the esProc directly through the JDBC limiting factor. In reinforcement, esProc is built with the perfect debugging function, and is also capable as regards retrieve and active on the collectanea save multiple databases, text files, and Excel sheets to gimcrack the cross-database computation. esProc is the good employee so as to reporting tools and the expert in favor send word data start computation.<\p>
